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Finding the Fourth Proportional to 9,611.40, 13,260.70 and 6,469.40

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Solution

The fourth proportional to 9,611.40, 13,260.70 and 6,469.40 is: 8,925.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,611.40 : 13,260.70 = 6,469.40 : x
  2. Step 2: Convert to fraction form
    9,611.40/13,260.70 = 6,469.40/x
  3. Step 3: Cross multiply
    9,611.40x = 13,260.70 × 6,469.40
  4. Step 4: Simplify right side
    9,611.40x = 85,788,772.58
  5. Step 5: Solve for x
    x = 85,788,772.58/9,611.40
  6. Step 6: Final answer
    x = 8,925.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.